<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Python Flask</title>
</head>
<body>
    <h1>Hello, {{ name|capitalize }}!!!</h1>
    {% if user %}
        Hello, {{ user }} !!
    {% else %}
        Hello, zhc!
    {% endif %}
</body>
</html>